How to shiny hunt using Rock Smash in Pokémon Emerald.
Smashing breakable rocks in caves.
Odds with charm
1 / 8,192
Odds no charm
1 / 8,192
Per encounter
~26s
Expected hunt
2.5 days
How the hunt works
Use Rock Smash on every breakable rock in the room, leave and re-enter to reset them, and repeat. Slow, but it's the only way to get some cave-only species.
The base rate in Pokémon Emerald is 1 in 8,192. There is no Shiny Charm in this game, so the base rate is the best you can get.
Pokémon you can find with Rock Smash in Emerald
4 species, sorted by best encounter rate.